Wear property of plasma spray coating in Cr2O3/TiO2 powder manufactured of spray dry method on the aluminum substrate was inspected for the application of piston-ring of automotive engine. The plasma spray coatings were varied with feed rate and particle size. Using the ball-on disc type tribometer, wear volume property and surface roughness were investigated. The delamination of the coating layers and wear track were observed with SEM. Also, the cross-section of wear track were investigated, using optical microscopy. As a result of experiment, wear mechanism was addressed.

chromium oxide, plasma spray coating, surface roughness, titanium dioxide, wear properties
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Copyright © 1997 ASM International. All rights reserved.
1997
ASM International
Topics
Plasma spray coating Friction and wear properties Surface roughness
Issue Section:
Hard and Erosion Wear Resistant Coatings
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